R90HD

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The R90HD is a high-class mini monitor. Unprecedented enclosure rigidity and leading edge drive unit technology in the shape of a 100mm (4”) MMP®II mid/bass driver and 25mm (1”) C-CAM® gold dome tweeter combine to produce clarity, dynamics and imaging abilities that are unparalleled in a speaker of this size. It can fill a room with high fidelity sound and yet visually melt into the background. The R90HD can be installed easily on ceiling or wall using the same high quality angled bracket supplied. Use the optional bespoke RadiusHD stand for floor positions.

Features

4" MMP®II. The Metal Matrix Polymer drivers have been completely re-worked and re-modelled with the aid of new design and simulation tools to achieve higher sensitivity and increased magnetic linearity. The new shaped T-section pole and focussed magnetic gap produces better linearity and lower distortion, resulting in fast punchy bass. All drivers are dedicated and model specific, with each model in the Radius HD series being designed and voiced individually.
1" Gold C-CAM® tweeter providing extension to in excess of 35 KHz ensuring the wide frequency bandwidth of HD music and cinema formats can be replayed faithfully.
Magnetically shielded drivers allow Radius HD to be safely used near sensitive microprocessor equipment or plasma/LCD displays.
High quality crossover uses high-grade metalised Polypropylene capacitors for increased clarity. High-grade air core and laminated iron core inductors give lowest possible distortion and low insertion losses.
Single through-bolt driver fixing provides mechanical de-coupling and enhanced mid-band clarity and resolution. The through-bolts also act as rigid cross bracing to give a very solid non-resonant cabinet.
Internal PTC auto-reset protection circuit to prevent over-driving.
Specially developed high grade PCOFC internal cable is used throughout to ensure maximum signal transfer at all frequencies and low signal resistance.
Flush fitting grille with rotate-able ‘m’ logo for positioning in Landscape or portrait orientation.
A specially designed die-cast metal wall bracket is supplied, providing easy install and adjustment for wall positioning.

Specification

Item	Value
Frequency Response:	80 Hz - 35 KHz
Sensitivity (1W@1m):	87 dB
Nominal Impedance:	8 Ohms
Power Handling Single (RMS):	60 W
System Power Handling (RMS):	100 W
Recommended Amplifier Requirements:	10 - 100 W
Maximum SPL (dBA):	105
Bass Alignment:	Bass reflex - rear ported
Drive Unit Complement:	1 x 100mm (4") MMP^®II cone mid-bass driver. 1 x 25mm (1") C-CAM^® gold dome tweeter
External Dimensions (H x W x D): mm (inches)	198 x 125 x 140 mm (7 13/16 x 4 15/16 x 5 1/2)
Weight (each): Kg (lbs)	2 (4 3/8)

Finishes

High Gloss Silver Lacquer
Walnut Real Wood Veneer
Rosemah Real Wood Veneer
Piano Black Lacquer
Piano White Lacquer

Technology

MMP® II

Metal Matrix Polymer driver cones have a polypropylene base loaded with metallic particles to offer a rigid and responsive structure. They are manufactured using a sophisticated high-pressure injection process, which modulates cone thickness at critical points to optimise stiffness and consistency, resulting in a superior sonic performance.

Gold Dome C-CAM®

The gold dome tweeter is formed from a ceramic-coated aluminium/magnesium alloy, gold anodised to a specific thickness for ideal stiffness and damping characteristics. Its new profile and surround geometry have been developed using advanced modelling tools, to provide the optimum qualities for accurate sound reproduction. The new design moves the first order of breakup to beyond 35kHz, producing a linear response way beyond audibility, which matches the wide frequency bandwidth available from HD music and cinema sound formats.

The gold dome is thinner, lighter, more rigid and therefore more efficient than domes made from other materials which are prone to distortion in the audio band.

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